Boring and reaming tool.



J?. M. RICHARDS'. BORING AND RBAMING TooL. APPLICATION FILED HEBT. 17, 1969.

1,1 14,039. Patented-oct. go, 1914.

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l T all 'whom it may concern:

UNrTED sTA'rEs PATENT oFFrc.

J-'OHN '.MI. RICHARDS, 0F BEAVER FALLS, PENNSYLVANIA. ASSIGNOR TO STANDARD GONNECTING ROD COMPANY, BEAVER FALLS, PENNSYLVANIA, A CORPORATION 0F PENNSYLVANIA.

.VBORING AND REAMING TOOL.

Specification. of Lett-ers Patent.

Patented Oct. 20, 1914.

Be it knownthat I, JOHN M. RionAnDs,

i a citizen of the United States, residing at Beaver Falls, in the county of vBeaver and State of Pennsylvania, have invented a new and usefulv Improvement in 4 Boring and Iteaming Tools, of which improvement the following is a specification. Y

My invention relates to improvements in boring and reaming tools and it is especially applicable in boring cylinders and such lik articles.

The object of my invention is to produce an adjustable, high speed boring and reaming tool in which( a plurality of cutting tools are adjustably secured in a head on a rotary shaft or mandrel, the tools being so disposed in said headl that they are capable of simultaneous adjustment. vI accomplish this object by means of the device hereinafter more specifically described, reference being had to the accompanying drawings, forming part hereof, in which Figure 1 is a side elevation of a boring and reaming tool embodying my invention; Fig. 2 is an end elevation; Fig. 3 is a longitudinal section; and Fig. 4 is an end elevation, partly in section, `to show means for securing the tools in the head.

Referring to said drawings, 1 isa shaft or mandrel, capable ofbeing rotated at'high speed. 2 is a head mounted on said shaft,

being secured thereto in any suitable manner, or, as shown in the accompanying drawings by means of a key 3 which is inserted in a groove or recess formed longitudinally of the shaft and the inner surface of the head for the purpose of preventing the head rotating on said shaft and the key. 4 which holds said head upon said shafts and prevents the same sliding longitudinally there# on.l The said head is provided, -at one end,

with a series of openings 5, 5 in which lthe cutter tools 6, 6 are seated; the said tools;

are preferably flattened on one side and are held rmly in said openings by means of set-screws 7 7, which engage against said flattened sides. The said openings diverge from the axis of said head outward through' the peripheral` edge thereof, so as to enable the tools seated therein to describe a larger circle at their outer ends than at the inner ends thereof, the said tools being capable of adjustment in said openings or holders and of being held there when adjusted by means of said set screws. The adjustment of said tools simultaneously is accomplished by means of a number of ,rods 8, 8 seated in slots 9, 9 formed longitudinally on the outer surface of the extension 10 of" said head. The outer surface of said extension is provided with a screw-thread, and has mounted thereon the nut 11 and the lock nut l2, the mner side of nut l1 contacting with vthe inner ends of the several rods to move the same inwardly against the inner ends of the several cutting tools for the purpose of moving the same outwardly any required distance in the adjustment thereof,v the said tools being adapted to be held when so adjusted by the setscrews as heretofore set forth.

Having described my invention, what I claim and desire to secure by Letters Patent 1s `1. In a device of the lcharacter described, thecombination of a spindle, a head havingy a bore in which said spindle is fixed and adapted to'. rotate therewith, the forward` sponding number of horizontally dis posed,

openings 'extending from therear o said head and intersecting said inclined openings, cutter tools secured, insai'd inclined openings and rodsadapted to be'seated in said horizontal openings and to engage the rear ends of the cutters, and means toy advance and lock said rods against the rear ends of vsaid cutters.

2... In a device of the character described, the combination of a rotatable shaft, a cylindrical head rigidly secured. thereon, the said head having an extension of less diameter than theA major part the. eof, the said head having a lurality of openings divergently disposed) therein, the rear end of said headI on a line with the extension thereof, having a plurality of openings therein,

cutting tools seated in the divergent open. l

ortion of the head,ad`

v rear portion of the head, and adapted to In testimony Awhereof, I have hereunto engage against the rear4 ends of the cutting signed my name in the presence of two subtools and an adjusting nut mounted on the scribing Witnesses.

extension of thel` head adapted toengage JOHN M. RICHARDS. 5 against the adjusting rods for the puroseV A the presenceofo-moving the same toward the rear enV of H. F. HAWKINS the cutting tools. l JOHN GILLEN. 

